Snow Buoy Snow Buoys (or snow height beacons) measure relative changes in snow height around the platform by means of 4 ultra-sonic snow depth sensors.

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Presentation transcript:

Snow Buoy Snow Buoys (or snow height beacons) measure relative changes in snow height around the platform by means of 4 ultra-sonic snow depth sensors. Calibrated against the initial snow depths during deployment, these relative changes translate into absolute values. In addition, standard meteorological parameters are recorded, and the MET data along with the GPS position is sent via Iridium at hourly intervals. Buoy description Manufacturer: MetOcean, Halifax, Canada Manufacturer‘s name: Snow Beacon Data provider JouBeh Technologies, Halifax, Canada Height of mast 1.75 m, total height: 2.55m, height of sensors: 1.5m Weight approx. 30 kg Deployment type Installation on sea ice (into 25cm diameter hole) Technical Details Measured parameters Sensor Snow depth (m) 4x HRXL-MaxSonar-WR3 (MaxBotix) (accuracy: ±0.001 m) 1.5m Air temperature (°C) YSI 44032 (accuracy ±0.5°C) Body temperature (°C) YSI 44032 (accuracy ±0.5°C) Barometric pressure (hPa) PTB110 (Vaisala) (accuracy: ±1.0 hPa) or equivalent GPS position Jupiter 32xLP (Navman Wireless) (accuracy: ± 3 m) Measurement interval Hourly acquisition Data transmission Transmits hourly Data transmitter Iridium 9602 SBD Transceiver Power supply Lithium or alkaline batteries (life time >1 year)